Bearing trimmer table



Oct. 17, 1933. BROOKS 1,930,949

BEARING TRIMMER TABLE Filed June 8, 1931 IN VENTOR. firm,

A TTORNE I This invention relates to and has for 'an object the provision of a'machine for trimming theflatw Patented Oct. 17, 1933 N T S A ES T- OFFICE 2 1,930,949. BEARING TRIMMER ABLE. Lee Brooks, Los Aiigele s Calif." Application. ran 'aiiss scin u 542,92

4 Claims. v (01. 1-58 1 surfaces of halved .journals orbearings such as are employed for 'rotatably supporting automo- ;bile crank shafts and ,the like.

' Another object is to provide a bearing trim ming machine provided with relatively stationary and adjustable fiat top portions, and a cutter operating therebetween; togetherwith' means ..for adjusting said adjustable portion and the cutter simultaneously and to. a common extent above the level of the stationary portion, whereby when the bearing is positioned with its-flat surface on the stationary portionthe same lmay (be moved over the cutter and trimmed to an extent corresponding to the difference in elevation between the stationary. andadjustable p'or-. tionsof thet'op. .f

A further object is. to provide a conveniently arranged, simple, compact machine of light weight and durability which may be readily operated by skilled or unskilled persons alike for the purpose of trimming bearings, especially when the removal of shims from the bearings iwill not suffice to take the bearings up sufficient- Fig. 2 is a transverse section of the same on line 2--2 of Fig. 1.

Fig. 3 is a sectional elevation of the same on line 33 of Fig. 2.

Fig. 4 is'a fragmentary section on line 4-4 of Fig. 1. I

Fig. 5 is a fragmentary section on line 5-5 of Fi 1.

j The machine includes a stationary frame 1 and a movable frame 2 adjustably mounted thereon, a rotatable cutter 3 and a motor 4 operatively connected with and supported on the adjustable frame 2, an adjusting element 5 serv- 'ing to adjust the frame 2 on the frame 1, and

a rotatable adjusting screw 6 mounted on the frame 1 and connected with the element .5} all arranged as shown and hereinafter described.

The frame l has a base portion '7 adapted to rest upon a suitable supporting surface, and a top 8.

adjustable top 11 relative to thestationary top 8.

flat to'pfl8 connected with therbase by means of a plurality of legs, 9, 9 etc. The frame2 has a flat base 10 and aflat top 11 connected by legs 12. 12 etc., and thegmotor 4 is mounted onjthe base l0-of frame 2, while-the top 11 carries the rotatable cutter 3 held one shaft. 14, which is journaled in bearings 15', 15 secured'to the lower side of the top 11. g

The cutter is operated from the motor 4 by means of a belt 16 which runs over pulleys 1'7 and '65 a lsvcarried on the motor shaft 19 and the cutter shaft 14 respectively.

Byreference to Fig. 1 it will be noted that the top 11 of the adjustable frame 2 isof' peculiar, oonfigurat'on and is vertically .slidable in the stationary top 8 of frame 1. The adjustable top ll'has projections20, 20 on one side thereof which fit corresponding portions of the opening in the top 8 while the top 8 has corresponding or differently, formed projections 21,wh ich fit similar re cesses in the adjustable top 11; wherebythe top 11 may be guided in its vertical movement in and relative to the top 8. The periphery ofcutter 3 is adapted to be substantially tangent w the uper face of the adjustable top 11, and an opening 22 is formed in the top 11 to receive said cutter. The adjusting element 5 is of U shape as illustrated in Fig. 1, and includes a longitudinal portion 23 with legs24'which underlie opposite portions of the adjustable top 11 and have fiat horizontal lower surfaces and inclined upper surfaces, as at 25. "The opposite end portions of the adjustable top 11' are provided with grooves 26, 26 which are inclined to correspond to the angu- The frame 1 supports a pair of bars 27, 27 which are attached'to the lower side of top 8 by means of cap screws or bolts 29, 29 and serve as supports for the adjustingelement 5. Thus, as seen in Fig. 4, the adjustment of the wedges 24 horizontally between the top 11 andzthe bars 2'7, 27 will serve to elevate or lower the adjustable frame 2 so as to elevate to a'desired extent the top 11 and the cutter 3 above the uppersurface of the i i i The longitudinal portion'23" of member 5 has adependinglug 30 thereon in which one end of the adjusting screw 6 is threaded, while the other .endzof said screw is rotatablyheld in a depending bearing 31 on the frame 1. A hand wheel 32 with a micrometer adjustment 33 is provided on the outer end of screw .6 sothat the member 5 may be adjusted with exactitude and precision for correspondingly elevating or depressing the stationary top 8 of frame 1.

The base 10' of the adjustable frame 2 is vertically adjustable between the longitudinal ribs 34, 34 and intersecting transverse ribs 35, formed centrally of the base '7 of frame 1. Thus the adjustment of the frame 2 by means of the hand wheel 32 will simultaneously adjust the motor 4, cutter 3 and top 11 vertically with respect to the In operation, a bearing of the character shown in Fig.2 is placed on the stationary top 8 and the top 11 is adjusted by means of hand wheel 32 to a position above the surface of 'top 8 to correspond to the thickness of a cut to be taken from the lower fiat surface of the bearing, whereupon the motor is energized and as the cutter is rotated the bearing is movedinwardly over cut-' ter 3 and onto the movable top 11, and the bearing is trimmed nicely andsmoothly' to correspond to the extent .to which the bearing is to be taken hat I claim is:

g 1. A bearing trimmer comprising a frame having a stationary table provided with an opening, a vertically adjustable top mounted in said opening and formed with inclined surfaces on the lower side thereof, and a horizontally adjustable member movably supported on said frame and porting members secured to said table and disposed below the inclined portions of said top, and

an adjusting element provided with a pair of parallel wedges slidably mounted on said supporting members and having inclined upper surfaces engaging the inclined portions of said top for elevating said top to an extent to correspond portions on the lower side thereof, transverse supporting members secured to said table and disposed below the inclined portions of said top, an

adjusting element provided with a pair of parall'el wedges slidably mounted on said supporting members and having inclined upper surfaces engaging the inclined portions of said top for elevating said top to an extent to correspond to the horizontal movement of said Wedges, and manually operable means mounted on said frame and connected with and for operating said adjusting element. 4. A bearing trimmer comprising a frame, a stationary table mounted thereon provided with an opening, a movable top vertically adjustable in said opening and formed with parallel inclined portions on the lower side thereof, transverse supportingmembers secured to said table and disposed below the inclined portions of said top, an adjusting element provided with a pair of parallel wedges slidably mounted on said supporting members and havinginclined upper surfaces engaging the inclined portions of said top for elevating said top to an extent to correspond to the horizontal movement of said wedges, the opening in said table comprisfnga rectangular portion and end'extensions, said adjustable top having portions corresponding in form to said end extensions, and a laterally extended'portion fitting the rectangular portion of the opening whereby to guide said top in its'vertical movement.

LEE BROOKS. 

